Swim fin



FIG. 1 is a first perspective view of a swim fin showing my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line showing of the swim fin is for the purpose of illustrating portions of the article that forms no part of the claimed design. 

CLAIM The ornamental design for a swim fin, as shown and described. 